Nanoscale engineering of the waveguide local effective index by metamaterial resonances: Toward transformation optics applications
Résumé
In this paper we address the potential of metallic metamaterials in guided wave configurations to explore the possibility of their use for transformation optics applications in the near-infrared domain ($\lambda$ = 1.5 $\mu$m). The experimentally investigated hybrid metamaterial structure is made of 2D array of 200$\times$50$\times$50 nm gold cut wires located on the top of high index silicon on insulator (SOI) waveguide. The experimental and modelling results show that composite waveguide effective index and propagation losses can be accurately controlled through the engineering of metamaterial properties. The possibility for controlling at the nanoscale the local effective index can be used in transformation optics applications. The hybrid metamaterial guided wave configuration may become a promising alternative to the bulk multi-layers metamaterial structures in the near infrared domain.
Mots clés
light propagation
nanoelectronics
optical losses
optical metamaterials
silicon-on-insulator
2D array
SOI waveguide
near-infrared domain
near infrared domain
nanoscale engineering
metamaterial resonances
transformation optics applications
propagation losses
silicon on insulator
Si
bulk multilayers metamaterial structures
composite waveguide effective index
gold cut wires
guided wave configurations
hybrid metamaterial guided wave configuration
hybrid metamaterial structure
metallic metamaterials
metamaterial properties
waveguide local effective index
Indexes
Numerical models
Optical waveguides
Optics
Reflection
Silicon
integrated optics
localized surface plasmons
metamaterials
nanophotonics
transformation optics